mention libnss-myhostname as an alternative to hacking /etc/hosts

howto/new-machine.md

@@ -90,6 +90,10 @@ taken by the installer:
     
         Sep 24 17:14:45 bacula-director-01 bacula-dir[1467]: Config error: name torproject-static-gitlab-shim-source.torproject.org-full.${Year}-${Month:p/2/0/r}-${Day:p/2/0/r}_${Hour:p/2/0/r}:${Minute:p/2/0/r} length 130 too long, max is 127
 
+    TODO: this could be replaced by [libnss-myhostname](https://packages.debian.org/sid/libnss-myhostname) if we wish
+    to simplify this, although that could negatively impact things
+    that expect a real IP address from there (e.g. bacula).
+
  3. a public IP address has been set and the host is available over
     SSH on that IP address. this can be fixed with: